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Traffic accident road base map information processing method based on topographic map and image

An information processing method and a traffic accident technology, which are applied in the field of road basemap information processing, can solve the problem that road basemaps are not easy to save, archive, transmit and share information, meet the accuracy requirements of accident site responsibility determination, and cannot achieve large-scale problems. To promote the application and other issues, to achieve the effect of convenient transmission and storage, improve the efficiency of work and case handling, and clear the picture

Inactive Publication Date: 2013-06-05
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1) Directly draw a schematic diagram on site, generally use instruments such as a tape measure or a range finder to measure, and specify the positional relationship between two points by marking dimensions. Such drawings cannot meet the accuracy requirements for accident site responsibility identification;
[0004] 2) Draw a scale map on site. This method of operation is too slow, especially at some intersections where accidents occur frequently, where the roads, auxiliary facilities, signs and markings are relatively complicated. Only used in traffic accidents;
[0007] 1) The relative accuracy is low, and the relative relationship of each object in the road base map is inaccurate;
[0008] 2) On the same road section, the road base maps drawn by different personnel are not uniform, which brings certain difficulties to the judgment of the party responsible for the accident;
[0009] 3) Paper-based road base maps are not easy to save, archive, and transmit and share information;
[0010] 4) Due to the limitation of on-site drawing time, the road base map is relatively random, and the coverage is incomplete
[0012] 1) After the accident, all graphics must be drawn on site, which takes up a lot of time;
[0013] 2) There is a lack of uniform industry standards, and the speed and informationization in the true sense have not been achieved;
[0014] 3) It cannot be promoted and applied on a large scale

Method used

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  • Traffic accident road base map information processing method based on topographic map and image
  • Traffic accident road base map information processing method based on topographic map and image
  • Traffic accident road base map information processing method based on topographic map and image

Examples

Experimental program
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Effect test

Embodiment 1

[0058] The present invention is mainly aimed at the rapid drawing of the proportional map of the traffic accident scene, and separates the fixed elements in the proportional map, and defines it as a road base map, which mainly includes road signs and markings, road facilities and the like. The present invention adopts a method for superimposed processing and acquisition of large-scale topographic maps and high-resolution remote sensing images. Existing large-scale topographic maps are all in a unified coordinate system. The general coordinate system is an independent urban coordinate system with a scale of 1:500. The road sign marking graphic information required for the traffic accident map. Road signs and markings are important graphic elements of traffic accident scene maps, and are also an important basis for accident handling. The high-resolution remote sensing image graphics can just provide the necessary graphic information such as road signs and markings required by t...

Embodiment 2

[0094] Taking ordinary roads in Lujiazui area of ​​Pudong, Shanghai as an example, the data sources are 1:500 topographic map and 2004 image data. The remote sensing image data are multi-spectral false-color images and panchromatic fast-bird images with a resolution of 0.61m. The coordinate reference system of the topographic map is the Shanghai city coordinate system.

[0095] The preprocessing of remote sensing images includes image fusion and cropping. In order to easily distinguish ground objects and facilitate digitization, the two images are fused. After the remote sensing image is fused, the remote sensing image can be roughly cropped according to the area range of the topographic map, so as to obtain an image area of ​​the same size as the topographic map range. The preprocessing of the topographic map mainly uses the graphics cleaning tool of Map 3D to clean up the original topographic map such as deleting short objects, cleaning up multi-line segments, and breaking...

Embodiment 3

[0099] Taking the intersection of Beijiang North Road and Shaonan Avenue in Shaoguan City as an example, the image map of this intersection cannot be directly distinguished from the image map due to the occlusion of trees. First, the image is used as the background, and part of the road sign markings are drawn. The result is as follows Figure 7 shown. In the field, the lane width was measured and the number of lanes was checked. Change the original double yellow solid line to double yellow dashed line, translate the lane dividing line, and supplement the missing lane line. Also extend the sidewalk to the side of the road. The completed road basemap is as follows: Figure 8 shown. By adopting this method, it is avoided to set up instruments on the field and carry out large-scale measurement, shorten the workload in the field, and improve the efficiency of road base map formation.

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Abstract

The invention relates to a traffic accident road base map information processing method based on a topographic map and an image. The method comprises a first step of pre-processing topographic map data, a second step of pre-processing image data, a third step of matching the topographic map data processed by the first step and the second step with the image data, a fourth step of selecting various road information on the topographic map data and the image data according to set code requirements and automatically generating a road base map, and a fifth step of revising the road base map through field investigation and plotting. Compared with the prior art, the traffic accident road base map information processing method based on the topographic map and the image has the advantages of being high in mapping precision and full in data covering and the like. The data is easy to transfer and store, and traffic accident management time can be shortened.

Description

technical field [0001] The invention relates to a road base map information processing method, in particular to a traffic accident road base map information processing method based on topographic maps and images. Background technique [0002] The road base map is an important part of the traffic accident scene map. The road base map has many contents and takes a long time to draw. In the process of handling traffic accidents, there are three main ways to draw the road base map: [0003] 1) Directly draw a schematic diagram on site, generally use instruments such as a tape measure or a range finder to measure, and specify the positional relationship between two points by marking dimensions. Such drawings cannot meet the accuracy requirements for accident site responsibility identification; [0004] 2) Draw a scale map on site. This method of operation is too slow, especially at some intersections where accidents occur frequently, where the roads, auxiliary facilities, signs ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/05G09B29/00
Inventor 姚连璧吴杭彬刘春陈素贞季惠丽门茂林王超孙海丽
Owner TONGJI UNIV
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